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ESSENTIAL COSMIC PERS.-W/MASTER.ACCESS
9th Edition
ISBN: 9780135795750
Author: Bennett
Publisher: PEARSON
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Textbook Question
Chapter 16, Problem 55EAP
Galaxies at Great Distances. The most distant galaxies that astronomers have observed are much easier to see in infrared light than in visible light. Explain why that is the case.
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Students have asked these similar questions
The fact that many radio lobes emit less intensely on the side of the galaxy facing away from Earth suggests that
a.
they are formed by material falling into the galaxy.
b.
they are powered by black body radiation.
c.
they are excited by radiation from nearby galaxies.
d.
they are powered by the rapid rotation of the galaxy.
e.
they are created by jets of high-speed matter in magnetic fields, which tend to emit photons in the direction they are moving.
Based on what you have learned about galaxy formation from a protogalactic cloud (and similarly star formation from a protostellar cloud), the fact that dark matter in a galaxy is distributed over a much larger volume than luminous matter can be explained by
I. Dark matter does not emit EM radiations.
II. The pressure of an ideal gas decreases when temperature drops.
III. The temperature of an ideal gas decreases when its thermal energy decreases.
A. I only
B. I and III only
C. II and III only
D. I, II and III
Is the answer C? Thank you!
3. Consider the following stellar spectra from the sun and from a supercluster of galaxies.
ABSORPTION LINES FROM THE SUN
ABSORPTION LINES FROMA
SUPERCLUSTER OF GALAXIES BAS11
v = 0.07c, d 1 billion light years
(a) Describe the movement of the stars in the supercluster relative to the sun.
(b) Suppose the absorption lines on the bottom spectrum had varying thickness.
What would this indicate about the stars in the supercluster?
Chapter 16 Solutions
ESSENTIAL COSMIC PERS.-W/MASTER.ACCESS
Ch. 16 - Prob. 1VSCCh. 16 - Prob. 2VSCCh. 16 - Answer questions 1-3 based on Figure 16.18,...Ch. 16 - Prob. 4VSCCh. 16 - Prob. 5VSCCh. 16 - Prob. 6VSCCh. 16 - Prob. 1EAPCh. 16 - Prob. 2EAPCh. 16 - Prob. 3EAPCh. 16 - Prob. 4EAP
Ch. 16 - Prob. 5EAPCh. 16 - Prob. 6EAPCh. 16 - Prob. 7EAPCh. 16 - Prob. 8EAPCh. 16 - Prob. 9EAPCh. 16 - Prob. 10EAPCh. 16 - Prob. 11EAPCh. 16 - Prob. 12EAPCh. 16 - Prob. 13EAPCh. 16 - Prob. 14EAPCh. 16 - Prob. 15EAPCh. 16 - Prob. 16EAPCh. 16 - Prob. 17EAPCh. 16 - Prob. 18EAPCh. 16 - Prob. 19EAPCh. 16 - Prob. 20EAPCh. 16 - Prob. 21EAPCh. 16 - Prob. 22EAPCh. 16 - Prob. 23EAPCh. 16 - Prob. 24EAPCh. 16 - Prob. 25EAPCh. 16 - Prob. 26EAPCh. 16 - Prob. 27EAPCh. 16 - Prob. 28EAPCh. 16 - Prob. 29EAPCh. 16 - Prob. 30EAPCh. 16 - Prob. 31EAPCh. 16 - Prob. 32EAPCh. 16 - Prob. 33EAPCh. 16 - Prob. 34EAPCh. 16 - Prob. 35EAPCh. 16 - Prob. 36EAPCh. 16 - Prob. 37EAPCh. 16 - Prob. 38EAPCh. 16 - Prob. 39EAPCh. 16 - Prob. 40EAPCh. 16 - Prob. 41EAPCh. 16 - Prob. 42EAPCh. 16 - Prob. 45EAPCh. 16 - The Case for Black Holes. Consider four sets of...Ch. 16 - Prob. 47EAPCh. 16 - Unanswered Questions. Briefly describe one...Ch. 16 - Prob. 50EAPCh. 16 - Prob. 51EAPCh. 16 - Hubble’s Galaxy Types. How would you classify the...Ch. 16 - Prob. 53EAPCh. 16 - Prob. 54EAPCh. 16 - Galaxies at Great Distances. The most distant...Ch. 16 - Universe on a Balloon. In what ways is the surface...Ch. 16 - Prob. 57EAPCh. 16 - Prob. 58EAPCh. 16 - Prob. 59EAPCh. 16 - Prob. 60EAPCh. 16 - Prob. 61EAP
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